diff --git a/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java b/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java
index 8bda5275..11cc1010 100644
--- a/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java
+++ b/zt-module-base/zt-module-base-api/src/main/java/com/zt/plat/module/base/enums/ErrorCodeConstants.java
@@ -72,4 +72,5 @@ public interface ErrorCodeConstants {
 
     // ========== 主数据同步  ==========
     ErrorCode MASTER_DATA_SYNC_DISABLED = new ErrorCode(1_027_900_001, "主数据同步功能已禁用");
+    ErrorCode MASTER_DATA_SYNC_BATCH_SIZE_TOO_LARGE = new ErrorCode(1_027_900_002, "最大批次不得超过 1000");
 }
diff --git a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataSyncServiceImpl.java b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataSyncServiceImpl.java
index 3fd3f984..3d2e0c2a 100644
--- a/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataSyncServiceImpl.java
+++ b/zt-module-base/zt-module-base-server/src/main/java/com/zt/plat/module/base/service/masterdatasync/MasterDataSyncServiceImpl.java
@@ -75,6 +75,9 @@ public class MasterDataSyncServiceImpl implements MasterDataSyncService {
         if (!properties.isEnabled()) {
             throw ServiceExceptionUtil.exception(ErrorCodeConstants.MASTER_DATA_SYNC_DISABLED);
         }
+        if (command.getBatchSize() > 1000) {
+            throw ServiceExceptionUtil.exception(ErrorCodeConstants.MASTER_DATA_SYNC_BATCH_SIZE_TOO_LARGE, command.getBatchSize());
+        }
         MasterDataSyncReport report = MasterDataSyncReport.start(command);
         List<String> materialCodes = sanitizeCodes(command.getMaterialCodes());
         report.setMaterialCodes(materialCodes);
@@ -306,7 +309,11 @@ public class MasterDataSyncServiceImpl implements MasterDataSyncService {
                 continue;
             }
             MaterialInfomationDO current = existingById.get(codeId);
-            String name = normalizeValue(item.getMaterialName());
+            // 名称优先取 MDM 的长描述（desclong），若为空再回退到 desc1
+            String name = normalizeValue(item.getLongDescription());
+            if (name == null) {
+                name = normalizeValue(item.getMaterialName());
+            }
             if (current == null) {
                 MaterialInfomationDO created = MaterialInfomationDO.builder()
                         .id(codeId)